NO.1 (BOND MULTIPLIER) It is the first step of olaplex system, it restore the broken disulfide bonds in the hair. It can be used with all color techniques: coloring, perming, relaxing, bleaching, or treat damaged hair.  PERFECTOR) It is the second step of olaplex system & contains same active ingredient as NO.1 but in the form of cream to facilitate its even distribution in the hair it helps in reconnecting the remaining broken disulfide bonds in the hair